Railway truck pedestal structure



E. F. DOHE ET AL RAILWAY TRUCK PEDESTAL STRUCTURE Filed Sept. 8, 1941May 25, 1943.

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Hu U 8 v w w 7 W m a W W 4 I 1 \m QQWQQQQQQRA Q HK l G @V m ERNEST F.DOHE WILLIAM J. WILSON BY ATTORNEY Patented May 25, 1943 RAILWAY TRUCKPEDESTAL STRUCTURE Ernest F. Dohe and William J. Wilson,

Omaha, Nebr.

Application September 8, 1941, Serial No. 409,948

9 Claims.

The invention relates to railway rolling stock and more particularly totruck pedestal and axle box assembly and consists in a novel mounting ofthe liner or journal box lateral motion device on the pedestal.

Because of the increased high speeds at which trains are being run, ithas been found that to maintain a good riding truck the fits between theparts of the trucks which have movement relative to each other, such asaxle boxes and the frame pedestals receiving the same, should be made asclose as possible. It is desirable to have only a small amount oflateral and longitudinal play or clearance between the pedestal legs andthe journal box so as to reduce as much as possible the effects oflongitudinal and transverse shocks between the box and truck frame. Itis also necessary that play between these parts shall not be increasedexcessively because of wear between the journal box and pedestal legs.

Efforts to obtain the desired results indicated above have been made byproviding renewable liners on the pedestal legs and on the journal boxesso that a relatively hard material can be used which will keep the wearto a minimum and so that when wear does take place the liners may berenewed without replacing the frame or journal box parts.

The main object of the present invention is to provide a close fltbetween the pedestal and the box which will accommodate the necessarymovement between the pedestal and the box vertically and transversely ofthe truck and at the same time avoid undue play or clearancelongitudinally of the truck and preferably which includes a liner, orlateral motion device, and provides for the adjustable mounting of theliner on the pedestal to secure the desired result.

This and other detailed objects of the invention as will appearhereafter are attained by the structure illustrated in the accompanyingdrawing in which- Figure 1 is a side view of one end of a railway truckwith a portion of one wall of the journal box and associated structuresectioned to more clearly illustrate the construction.

Figure 2 is a horizontal section taken approximately on the line 2--2 ofFigure 1 and drawn to an enlarged scale.

The truck wheel I is mounted on the truck axle 2 which carries thejournal box 3 provided with lateral wings l which support coil springs 5on which rests the truck frame 6 including a pedestal jaw l forreceiving the journal box between the pedestal legs 8. Movement of thebox longitudinally of the frame is resisted by anchor rods 9 extendinglongitudinally of the box with their ends connected respectively tobrackets Ill on the box and brackets ii on the frame.

This arrangement is disclosed and claimed in an application filed byJames C. Travilla, Jr. and Otto Jabelmann June 26, 1941, Serial No.399,838 and in itself does not constitute the present invention.

Each pedestal leg includes a transverse box opposing wall 12 and frontand rear side walls l3 and M respectively. The adjacent portions of thejournal box comprise a side wall l5, paralleling the leg wall I2, andfront and rear flanges l6 and I1, paralleling the leg walls I3 and I 4.

A liner and lateral motion unit is mounted on the pedestal leg andslidably engages the journal box. This unit includes a U-shaped innerplate member I8 having a transverse portion IS with flanges 20 extendingtherefrom alongside of leg walls I3 and M. A pad 2! of rubber-likematerial has one face bonded or otherwise secured to portion l9, and itsedges terminate substantially flush with the outer faces of flanges 20.

An outer plate member 22 is bonded or otherwise secured to the outerface of pad 2| and preferably is of U section with its flanges 23paralleling but spaced from flanges 20. Member 22 clears the box sidewall and has a sliding flt with the box flanges I! or with flanges 25 ofa suitable wear plate 24 provided on the box.

This liner unit comprises a lateral motion device as disclosed in PatentNo. 2,229,429, issued January 21, 1941, to James C. Travilla, Jr. Itaccommodates relative movement of the box and pedestal vertically of thetruck, although such movement may be yieldingly resisted by anchor rods9, but resists relative lateral movement between the journal box andpedestal, although yielding to forces tending to produce such relativetransverse movement as are encountered when the vehicle enters a curve,when the resulting shocks will be cushioned by the shear resistance ofpad 2|, and such shocks will be largely dissipated before reaching thetruck frame and the car body.

The liner unit is held to the pedestal leg by a bolt-like device whichincludes a shank 26 extending through walls [3, H and flanges 20 andretainer plates 21 welded thereon, there being nuts 28 threaded on theend portion of shank 26 and having conical bases fitting the openings inthe retainer plates. To adapt the mounting of the liner unit on thepedestal leg so that proper adjustment can be made between them, toavoid undue play between the journal boxes and the pedestal, and torender the holding device effective, the openings 29 in flanges 26 areenlarged to accommodate initial movement of the liner unit transverselyof wall I2 to the correct position for engagement with box 3 inaccordance with the centering of the latter in the pedestal, asdetermined, for example, by anchor rods 9.

In mounting the liner unit and lateral motion device on the pedestal, itis first applied over the pedestal leg and temporarily clamped thereon.Then element 26 is inserted and retainers 21 placed over the ends ofelement 26 and nuts 28 applied to the ends of element 26 and screweddown to lightly thrust retainers 21 against flanges 26.

If desired, a selective shim 30 of requisite thickness, or more than onesuch shim, may be placed between wall l2 and plate 19 to adjust theclearance between the box side wall and plate 22 and to provide a firmbacking for plate l9. After the proper distance between the liners atopposite sides of the pedestal has been obtained,

nuts 28 are tightened and retainers 21 are permanently secured toflanges 20 as by one or more welds W or a continuous weld, applied insitu.

The openings in walls I3 and H for element 26 snugly seat the latter sothat the liner will not shift from desired position after the assemblyis completed.

This arrangement makes it possible to effect readily a desiredadjustment of the liner, or lateral motion device, and the pedestal andto closely control the fit between the journal box and pedestal, Fullannular bearings are provided between element 26, through nuts 28, andthe liner unit and the pedestal walls. Hence repeated thrusts betweenthe box and pedestal are unlikely to affect the mounting as would occurif the tapered portions of the nuts had only a line contact with thecounter-sunk surfaces in plate 21 or if the bolt shank 26 had only aline contact with the openings in pedestal walls l3 and I4.

The liner unit illustrated and described embodies a lateral. motiondevice and in the appended claims the term liner is intended to cover alateral motion device of the type described, but it will be understoodthat a simple liner plate, corresponding to element I8 but directlycontacting the box wall and flanges, or wear plates thereon, may bemounted upon the pedestal in the same manner.

Other variations in the details of the construction may be made withoutdeparting from the spirit of the invention, and the exclusive use ofsuch modifications as come within the scope of the claims iscontemplated.

What is claimed is:

1. In combination, a railway truck pedestal leg, a liner therefor havinga journal box opposing portion and a flange extending from said portionover the side of the pedestal leg, a holding device extending throughthe pedestal leg and said flange, the opening in the pedestal legprovi-ding a snug fit for said device, and the opening in said flangefor said device being enlarged to accommodate movement of said linerportion towards and away from the pedestal leg, a member overlying saidopening in said flange and the adjacent portion of said flange andapertured to closely fit said device, and separate means fixedlysecuring said member to said liner flange to prevent movement of saidflange relative to said member, device and pedestal leg.

2. A structure as described in claim 1 in which the means securing themember to-the liner flange comprises welds applied to the member and theliner flange on a part of the latter facing exteriorly of the pedestalleg.

3. In combination, a railway truck pedestal leg, a liner therefor havinga journal box opposing portion and a flange extending from said portionover the side of the pedestal leg, a holding device extending throughthe pedestal leg and said flange, the opening in the pedestal legproviding a snug fit for said device, and the opening in said flange forsaid device being enlarged to accommodate movement of said lin-erportion towards and away from the pedestal leg, a member overlying saidopening in said flange and the adjacent portion of said flange andapertured to closely fit said device, and means applicable to saidmember and liner flange, after adjustment oi. said liner on saidpedestal, for securing said member and flange relative to each other andthereby maintaining the position of the liner on the pedestal.

4. In combination, a railway truck pedestal leg, a liner therefor havinga journal box opposing portion and a flange extending from said portionover the side of the pedestal leg, a holding device extending throughthe pedestal leg and said flange, the opening in said flange for saiddevice being enlarged to accommodate movement of said liner portiontowards and away from the pedestal leg, a vertically elongated plateoverlying a substantial portion of said flange and apertured to receiveand closely flt said holding device to afford an annular bearing for thelatter, and means securing said plate to said flange at verticallyspaced points near the top and bottom of the flange and plate andintermediate said points to distribute the thrust between said deviceand flange over an extended area.

5. In combination, a railway truck pedestal for receiving a relativelymovable axle journal box and including a leg having front and rear wallsand a transverse wall between them arranged to oppose a side of ajournal box, a pedestal liner applied to said leg and including aportion extending across said wall and having flanges extendingalongside the front and rear walls of the pedestal, a selective shimbetween said liner portion and the transverse wall of the pedestal leg,a bolt-like device extending through apertures in said pedestal frontand rear walls, and through said flanges, and snugly seated in said wallapertures, the apertures in said flanges being enlarged to accommodateadjustment of said liner on said pedestal leg as required for shims ofdifferent thickness between the liner and the pedestal leg transversewall, retainer plates overlying the apertured parts of said flanges andprovided with openings, the bolt-like device comprising a shank withtapered units at its ends adjustable relative to each other transverselyof the pedestal and fitting in said retainer plate openings, saidretainer plates being welded in situ to said liner flanges.

6. In combination, a railway truck pedestal leg, a liner therefor havinga journal box opposing portion and flanges extending from said portionover the sides of the pedestal leg, a holding device having an elongatedshank extending through the pedestal leg and said flanges, the openingsin said flanges for said device being members,

tending through said flanges, the openings in enlarged to accommodatemovement of said liner portion towards and away from the pedestal leg,members overlying said openings and the adjacent portion of said flangesand having apertures to receive said device shank, tapered units on saiddevice shank adjustable relative to each other transversely of thepedestal to snugly flt said member apertures, and separate means fixedlysecuring said members to said liner flanges to prevent movement of saidflanges relative to said device and pedestal leg.

7. In combination, a railway truck pedestal leg, a liner therefor havinga journal box opposing portion and a flange extending from said portionover the side of the pedestal leg, a plurality of holding devicesextending through the pedestal leg and said flange and spaced apartvertically, the openings in said flange devices being enlarged toaccommodate movement of said liner portion towards and away from thepedestal leg, a member securely engaging a plurality of the devices, andmeans securing said member to said flange at vertically spaced points tohold said devices and flange against relative movement and to distributethe thrust between said devices and flange over an extended area of saidflange.

8. In combination, a railway truck pedestal leg, a liner therefor havinga Journal box opposing portion and flanges extending from said portlon'over the sides 01' the pedestal leg, a plurality of bolts extendingtransversely through the pedestal leg and snugly fltting therein andalso exfor said said flanges for said bolts being enlarged to providefor movement of said liner portion towards and away from the pedestalleg, a plate washer member overlying each flange and apertured for thecorresponding ends of said bolts and fltting the same snugly, and meanssecuring each of said plates to the corresponding flange at spacedpoints Iollowing adjustment of the liner and pedestal leg anddistributing the thrustbetween the bolts and the liner over an extendedarea of the liner.

9. In combination, a railway truck pedestal leg with front and rearwalls, a liner therefor having a journal box opposing portion'andflanges extending from said portion over the sides of the pedestal leg,said leg and flanges having apertures, a holding device extendingthrough said apertures, and snugly seated in said wall apertures, theapertures in said flanges being enlarged to accommodate the adjustmentof said liner on said pedestal leg, retainer plates overlying theapertured parts of said flanges and provided with tapered openings, saidholding device being provided with tapered units thereon adjustablerelative to each other transversely oi the pedestal and snugly flttingthe tapered openings in said retainer plates, and means fixedly securingsaid retainer plates to said liner flanges to prevent movement of saidflanges relative to said plates, devices, and pedestal leg.

ERNEST. F; DOHE. WILLIAM J. WILSON.

